Where to purchase Portuguese Clasp

[imajin]

So I splurged and bought an authentic IWC Portuguese 3714. I absolutely love my watch, and consider it my best purchase. I went to the local store and asked how much the clasp would cost... $489. I'd rather just keep the original buckle than throw down an extra $500. Does anyone know where one can find a replica clasp which would be indistinguishable than the original?

thanks guys!